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System and method for fast acquisition position reporting using communication satellite range measurement

  • US 20050171695A1
  • Filed: 01/10/2005
  • Published: 08/04/2005
  • Est. Priority Date: 07/12/1999
  • Status: Active Grant
First Claim
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1. A location determination system, comprising a. a mobile terminal operative to take code phase measurements from signals received from a plurality of GPS satellites, said mobile terminal further being operative to receive a communication from a wireless signal communicating over an area of interest, said received communication enabling said mobile terminal to identify said area of interest;

  • b. a communication satellite; and

    c. a service operations center operative to receive said code phase measurements and an identification of said area of interest from said mobile terminal via said communication satellite, and to iteratively calculate a position solution using an initial position estimate based on said area of interest and said plurality of code phase measurements, wherein said area of interest has a size that is less than a size of a convergence zone of the position solution process using said iterative calculations.

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